actually yes. i've known wild pheasants and partridges to learn that farmers bring grubs to the surface where they work and start following people about. theres a pheasant near us that'll hop onto the table in the garden and peer in the window to see humans.I know in the context of “free range eggs” it just means access to outdoors, but 100% free range/roam would (or should?) imply there is no containment of the birds.. if there is another word for that, I can’t think of it.
Either way, wild doesn’t just mean “not contained.” It’s the opposite of domesticated. You certainly couldn’t approach a wild pheasant and pick it up, could you?
it's still not a kept bird. it has to fly and avoid foxes etc.